A quick question

If I buy 2 players from the same team who have full affinity. Does the affinity remain between these 2 players or does everything have to be redone?

First of all, do they have a position on the same line because, for example, if it's a striker and a defender, that's settled.
But even if they are 2 players on the same line, I don't think they will keep their affinity with each other (c.f. the case of the affinity of 2 players selected from the same club in an IS match).
But the safest thing is to ask for confirmation from those who have bought 100k 10 players from the same club on their double account since price liberalisation :) :) 😀 😃 🙂

Yes they keep their affinities if they are on the same line